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Figure 2 | Health and Quality of Life Outcomes

Figure 2

From: Validation of the Clinical COPD Questionnaire (CCQ) in primary care

Figure 2

Relationship between SGRQ scores and other estimations for COPD in the entire study sample (n = 111). The group with COPD verified by spirometry (filled triangles), GP diagnosis of COPD not verified by spirometry (empty triangles). a. Scatterplot of SGRQ scores against CCQ scores. Intercept for the regression lines: 0.35: slope 0.048: r2 0.70. b. Change in SGRQ score between visit one and two plotted against change in CCQ score. Intercept for the regression lines: -0.22: slope 0.045: r2 0.32. c. Change in SGRQ scores plotted against GPs estimation of change between visit one and two displays large disagreement between the change in health status as recorded by the patient's SGRQ and the caregiver's estimation of change. The lines represent the minimal important difference (± 4) for SGRQ.

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